parse_backend_hamiltonian_dict return type hint is wrong

[NeoFantom]

Currently, this function from qiskit_dynamics.backend.backend_string_parser is defined as this signature:

def parse_backend_hamiltonian_dict(
    hamiltonian_dict: dict, subsystem_list: Optional[List[int]] = None
) -> Tuple[np.ndarray, np.ndarray, List[str], dict]:

However, according to the documentation and its code:

    return (
        static_hamiltonian,
        list(hamiltonian_operators),
        list(reduced_channels),
        subsystem_dims_dict,
    )

The second returned variable should be List[np.ndarray]. Please fix this type hint as it is very annoying when using static type check tools.